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It's not just your head! Different roast batches will benefit from different grind settings. In general, this is partly because different roast levels will result in beans that contain different compounds. This is because the heat or roasting causes chemical changes in some of the bean's compounds. On the other hand, roasting causes water in the bean to boil ...


Finally someone recommended descaling, the pipes were blocked which was causing everything to leak out. Descaling the machine took care of it!


Many of these fully automatic machines heat the milk by combining steam and milk. In my experience, those machines do not take into account the temperature of the milk, they simply mix steam and milk at a fixed ratio. Assuming the steam has a fairly constant temperature, the temperature of the heated milk will mostly depend on the temperature of the cold ...

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